<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div></div>
    <script>
      const gift = '50g的茶叶,清洗球'

      const div = document.querySelector('div')

      div.innerHTML = gift
        .split(',')
        .map((item) => `<span>[赠品] ${item}</span>`)
        .join('</br>')
      // console.log()
    </script>
  </body>
</html>
